COMPARATIVE ASSESSMENT OF THE IMPACT OF A RABBIT RANGE WITH A MECHANICAL VENTILATION SYSTEM ON THE FORMATION OF THE MICROCLIMATE USING TWO METHODS OF MANURE ACIDIZATION

Abstract

The research was conducted on Poltava Silver, Californian and New Zealand White rabbits on the basis of the rabbit farm of the Cherkasy Research Station of Bioresources of the National Academy of Sciences of Ukraine. The subject of the research is a comparative assessment of air pollution in a rabbit farm by greenhouse gases based on the factor of manure acidification. The purpose of the work is to assess the potential of applying ground double calcium superphosphate and an

aqueous solution of orthophosphoric acid to the manure channels of a rabbit farm to reduce the concentration of polluting gases and the physicochemical properties of rabbit manure. In addition, to identify cause-and-effect relationships between the properties of double calcium superphosphate and an aqueous solution of phosphoric acid and gaseous emissions from rabbit farms. Research methods are bibliographic, analytical, microbiological, physical, biometric. It was found that the use of double calcium superphosphate and orthophosphoric acid solution for manure acidification significantly reduced the concentration of ammonia and carbon dioxide in the rabbit farm by periods of the year by 10.2-27.8% and 9.6-18.4%, respectively. Acidification of rabbit manure by applying double calcium superphosphate and phosphoric acid solution is an effective measure to control this source of polluting gases NH3 and CO2 in the indoor air of rabbit farms with a prolonged weekly effect. The influence of the manure acidification factor on the variability of the concentration of carbon dioxide, ammonia and methane in the air of the rabbit farm was determined (probable but low, at the level of 0.016-0.106). It has been shown that during storage of rabbit manure, due to its high buffering capacity, its active acidity increases from acidic and weakly acidic to neutral (6.78-7.14 pH H2O) during the storage period from 8 (at a stable temperature regime above 210 ⸰C) to 90 days.